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https://www.readbyqxmd.com/read/28880140/-diving-accident-induced-arterial-gas-embolism
#1
P D Nijk, T P van Rees Vellinga, J M van Lieshout, M I Gaakeer
BACKGROUND: During scuba diving, nitrogen dissolves into the body tissues due to elevated pressure under water. During a sudden drop in pressure due to a rapid return to the water surface, arterial gas embolism can arise from pulmonary barotrauma. In a later phase, nitrogen bubbles can also arise in the venous circulation (decompression sickness). Arterial bubbles can incur vascular damage, obstruction, hypoxia and infarction. CASE DESCRIPTION: A 53-year-old healthy sport diver presented at the emergency department in a hypovolemic shock with progressive paresis of all the extremities...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28868598/turkish-recreational-divers-a-comparative-study-of-their-demographics-diving-habits-health-and-attitudes-towards-safety
#2
Bengusu Mirasoglu, Samil Aktas
INTRODUCTION: In Turkey, scuba diving has become more popular and accessible in the past decade and there has been a commensurate rise in the number of certified divers. This new generation of recreational divers has not been described in detail previously. The aim of this study was to profile this group, while investigating any gender differences and making comparisons with the global diving community. METHODS: Turkish dive club members and diving forum⁄blog readers were invited to complete an online questionnaire investigating their demography, medical issues and diving history and habits...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28868597/decompressing-recompression-chamber-attendants-during-australian-submarine-rescue-operations
#3
Michael P Reid, Andrew Fock, David J Doolette
INTRODUCTION: Inside chamber attendants rescuing survivors from a pressurised, distressed submarine may themselves accumulate a decompression obligation which may exceed the limits of Defense and Civil Institute of Environmental Medicine tables presently used by the Royal Australian Navy. This study assessed the probability of decompression sickness (PDCS) for medical attendants supervising survivors undergoing oxygen-accelerated saturation decompression according to the National Oceanic and Atmospheric Administration (NOAA) 17...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28868596/decompressing-rescue-personnel-during-australian-submarine-rescue-operations
#4
Michael P Reid, Andrew Fock, David J Doolette
INTRODUCTION: Personnel rescuing survivors from a pressurized, distressed Royal Australian Navy (RAN) submarine may themselves accumulate a decompression obligation, which may exceed the bottom time limits of the Defense and Civil Institute of Environmental Medicine (DCIEM) Air and In-Water Oxygen Decompression tables (DCIEM Table 1 and 2) presently used by the RAN. This study compared DCIEM Table 2 with alternative decompression tables with longer bottom times: United States Navy XVALSS_DISSUB 7, VVAL-18M and Royal Navy 14 Modified tables...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28864135/reliability-of-right-to-left-shunt-screening-in-the-prevention-of-scuba-diving-related-decompression-sickness
#5
Emmanuel Gempp, Marianne Lyard, Pierre Louge
OBJECTIVES: The aim of this study was to investigate the relationship between right-to-left shunt (RLS) and the clinical features of decompression sickness (DCS) in scuba divers and to determine the potential benefit for screening this anatomical predisposition in primary prevention. METHODS: 634 injured divers treated in a single referral hyperbaric facility for different types of DCS were retrospectively compared to 259 healthy divers. All subjects had a RLS screening by contrast Transcranial Doppler (TCD) ultrasound according to a standardized method...
August 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28861003/nanobubbles-form-at-active-hydrophobic-spots-on-the-luminal-aspect-of-blood-vessels-consequences-for-decompression-illness-in-diving-and-possible-implications-for-autoimmune-disease-an-overview
#6
REVIEW
Ran Arieli
Decompression illness (DCI) occurs following a reduction in ambient pressure. Decompression bubbles can expand and develop only from pre-existing gas micronuclei. The different hypotheses hitherto proposed regarding the nucleation and stabilization of gas micronuclei have never been validated. It is known that nanobubbles form spontaneously when a smooth hydrophobic surface is submerged in water containing dissolved gas. These nanobubbles may be the long sought-after gas micronuclei underlying decompression bubbles and DCI...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28810963/treating-decompression-sickness-military-flight-simulation-site-community-hospital-partnership
#7
Whitney C Rhodes, George Hertner, Robert Price, Lani Finck, Claudia Temmer, Tracy Cushing, Kathleen Flarity
BACKGROUND: High-altitude flight simulation familiarizes military trainees with the symptoms of hypoxia to prepare them for emergency situations. Decompression sickness (DCS) can occur as a result of these simulations. In cases when ground-level supplemental oxygen does not resolve symptoms, hyperbaric oxygen (HBO) therapy is indicated. Many military hyperbaric chambers have been closed because of cost reductions, necessitating partnerships with community hospitals to ensure access to treatment...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28790934/skin-lesions-in-swine-with-decompression-sickness-clinical-appearance-and-pathogenesis
#8
Long Qing, Dinesh K Ariyadewa, Hongjie Yi, Yewei Wang, Quan Zhou, Weigang Xu
Skin lesions are visual clinical manifestations of decompression sickness (DCS). Comprehensive knowledge of skin lesions would give simple but strong clinical evidence to help diagnose DCS. The aim of this study was to systematically depict skin lesions and explore their pathophysiological basis in a swine DCS model. Thirteen Bama swine underwent simulated diving in a hyperbaric animal chamber with the profile of 40 msw-35 min exposure, followed by decompression in 11 min. After decompression, chronological changes in the appearance of skin lesions, skin ultrasound, temperature, tissue nitric oxide (NO) levels, and histopathology were studied...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28783888/attenuation-of-collagen-induced-arthritis-by-hyperbaric-oxygen-therapy-through-altering-immune-balance-in-favor-of-regulatory-t-cells
#9
Byung-In Moon, Hyung-Ran Kim, Eun-Jeong Choi, Jeong-Hae Kie, Ju-Young Seoh
Hyperbaric oxygen (HBO₂) therapy is currently used for the treatment of chronic wounds, radiation-induced soft tissue necrosis, several oxygen-deficiency conditions and decompression sickness. In addition to the current indications, much empirical and experimental data suggest that HBO₂ therapy may benefit autoimmune diseases by suppressing immunity, but the underlying mechanism is not well understood. Therefore, in the present study, we investigated whether HBO₂ prevents the development of collagen-induced arthritis (CIA) in association with alteration of the immune balance between pro-inflammatory Th17 and anti-inflammatory regulatory T cells (Tregs)...
July 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28777905/decompression-sickness-among-diving-fishermen-in-mexico-observational-retrospective-analysis-of-dcs-in-three-sea-cucumber-fishing-seasons
#10
Oswaldo Huchim-Lara, Walter Chin, Silvia Salas, Normando Rivera-Canul, Salvador Cordero-Romero, Juan Tec, Ellie Joo, Nina Mendez-Dominguez
The probabilities of decompression sickness (DCS) among diving fishermen are higher than in any other group of divers. Diving behavior of artisanal fishermen has been directed mainly to target high-value species. The aim of this study was to learn about the occurrence of DCS derived from sea cucumber harvesting in the Yucatán Peninsula, Mexico. We conducted a retrospective chart review of diving fishermen treated at a multiplace hyperbaric chamber in Tizimín, Mexico. In total, 233 recompression therapies were rendered to 166 diving fishermen from 2014 to 2016...
March 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28777901/metabonomic-potential-plasma-biomarkers-in-abnormal-fast-buoyancy-ascent-escape-induced-decompression-sickness-model-and-the-protective-effects-of-pyrrolidine-dithiocarbamic-acid
#11
Fan Yiqun, You Pu, Wang Haitao, Bao Xiaochen, Ma Jun, Zhang Shi, Fan Yinghui
BACKGROUND: Decompression sickness (DCS) induced by fast buoyancy ascent escape (FBAE) is a special DCS, characterized with cardiopulmonary injuries. Serum metabonomics of this type of DCS has not yet been studied. We proposed a metabonomics approach for assessing serum metabonomics changes and evaluating the preventive effect of pyrrolidine dithiocarbamic acid (PDTC) in FBAE-induced DCS rats. METHODS: Sixty-five (65) rats were divided into three groups, including the Control, DCS and PDTC groups...
March 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28768090/erratum-regarding-inaccurate-authorship-attributions-noted
#12
(no author information available yet)
For the paper 'Hyperbaric programs in the United States: Locations and capabilities of treating decompression sickness, arterial gas embolisms, and acute carbon monoxide poisoning: survey results,' authorship and affiliations in UHM 43-1 read as: Chin W, Jacoby L, Simon O, Talati N, Wegrzyn G, Jacoby R, Proano J, Sprau SE, Markovitz G, Hsu R, Joo E. Undersea Hyperb Med. 2016 Jan-Feb; 43(1): 29-43. The corrected authorship reads as: Chin W, Jacoby L, Simon O, Talati N, Wegrzyn G, Jacoby R, Proano J, Sprau SE, Markovitz GH, Hsu R, Joo E...
January 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28768086/relationship-between-clinical-and-radiologic-findings-of-spinal-cord-injury-in-decompression-sickness
#13
Jae Myun Chung, Jin Young Ahn
BACKGROUND: Decompression sickness may involve the central nervous system. The most common site is spinal cord. This study was conducted to determine the relationship between magnetic resonance(MR) imaging findings of spinal damage. METHODS: We conducted a retrospective review of 12 patients (male=10, female=2) who presented with spinal cord symptoms. We investigated their clinical features, neurological findings and radiologic findings. RESULTS: The depth and bottom time of the dive were 34...
January 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28740100/quantification-of-cell-bubble-interactions-in-a-3d-engineered-tissue-phantom
#14
C Walsh, N Ovenden, E Stride, U Cheema
Understanding cell-bubble interactions is crucial for preventing bubble related pathologies and harnessing their potential therapeutic benefits. Bubbles can occur in the body as a result of therapeutic intravenous administration, surgery, infections or decompression. Subsequent interactions with living cells, may result in pathological responses such as decompression sickness (DCS). This work investigates the interactions that occur between bubbles formed during decompression and cells in a 3D engineered tissue phantom...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28731987/evidence-of-heritable-determinants-of-decompression-sickness-in-rats
#15
Jacky Lautridou, Peter Buzzacott, Marc Belhomme, Emmanuel Dugrenot, Pierre Lafère, Costantino Balestra, François Guerrero
INTRODUCTION: Decompression sickness (DCS) is a complex and poorly understood systemic disease caused by inadequate desaturation following a decrease of ambient pressure. Strong variability between individuals is observed for DCS occurrence. This raises questions concerning factors that may be involved in the inter-individual variability of DCS occurrence. This study aimed to experimentally assess the existence of heritable factors involved in DCS occurrence by selectively breeding individuals resistant to DCS from a population stock of wistar rats...
July 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28676021/medical-management-and-risk-reduction-of-the-cardiovascular-effects-of-underwater-diving
#16
Thomas F Whayne
Undersea diving is a sport and commercial industry. Knowledge of potential problems began with Caisson disease or "the bends", first identified with compressed air in the construction of tunnels under rivers in the 19th century. Subsequently, there was the commercially used old-fashioned diving helmet attached to a suit, with compressed air pumped down from the surface. Breathhold diving, with no supplementary source of air or other breathing mixture, is also a sport as well as a commercial fishing tool in some parts of the world...
June 20, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28661230/circle-co2-reabsorbing-breathing-systems-human-applications
#17
Patrick Magee
Artificial breathing systems to help humans survive extreme environments are used over a range of ambient pressures, using various gases of different volumetric concentrations. These activities include anaesthesia and intensive care activity, high-altitude mountaineering, firefighting, aerospace extravehicular space activity and underwater diving operations. A circle breathing system is one in which the exhaled carbon dioxide is absorbed by an alkali substance and the remaining unused gases are recirculated, usually for the sake of economy and environment...
July 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28641325/superior-canal-dehiscence-syndrome-associated-with-scuba-diving
#18
Naoharu Kitajima, Akemi Sugita-Kitajima, Seiji Kitajima
A 28-year-old female diver presented with dizziness and difficulty clearing her left ear whilst scuba diving. Her pure-tone audiometry and tympanometry were normal. Testing of Eustachian tube function revealed tubal stenosis. Video-oculography revealed a predominantly torsional nystagmus while the patient was in the lordotic position. Fistula signs were positive. High-resolution computed tomography (HRCT) of the temporal bone revealed a diagnosis of bilateral superior semicircular canal dehiscence (SCDS). Cervical vestibular-evoked myogenic potential (cVEMP) testing showed that the amplitude of the cVEMP measured from her left ear was larger than that from the right...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28641322/scuba-diving-and-otology-a-systematic-review-with-recommendations-on-diagnosis-treatment-and-post-operative-care
#19
REVIEW
Devon M Livingstone, Kristine A Smith, Beth Lange
Scuba diving is a popular recreational and professional activity with inherent risks. Complications related to barotrauma and decompression illness can pose significant morbidity to a diver's hearing and balance systems. The majority of dive-related injuries affect the head and neck, particularly the outer, middle and inner ear. Given the high incidence of otologic complications from diving, an evidence-based approach to the diagnosis and treatment of otic pathology is a necessity. We performed a systematic and comprehensive literature review including the pathophysiology, diagnosis, and treatment of otologic pathology related to diving...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28531363/beneficial-effect-of-enriched-air-nitrox-on-bubble-formation-during-scuba-diving-an-open-water-study
#20
Anne-Kathrin Brebeck, Andreas Deussen, Ursula Range, Costantino Balestra, Sinclair Cleveland, Jochen D Schipke
Bubble formation during scuba diving might induce decompression sickness. This prospective randomised and double-blind study included 108 advanced recreational divers (38 females). Fifty-four pairs of divers, 1 breathing air and the other breathing nitrox28 undertook a standardised dive (24 ± 1 msw; 62 ± 5min) in the Red Sea. Venous gas bubbles were counted (Doppler) 30-<45 min (early) and 45-60 min (late) post-dive at jugular, subclavian and femoral sites. Only 7% (air) vs. 11% (air28®) (n.s.) were bubble-free after a dive...
May 21, 2017: Journal of Sports Sciences
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